Why the government does not subponea Cloudfare, Inc
We don't know that. It might show up here but this is only aggregated info so no way to know for sure:
https://www.cloudflare.com/transparency/We could also watch PACER or state court records but those wouldn't show anything until a lawsuit is filed. Investigation details are rarely public.
Besides I have little doubt that the servers behind Cloudflare are about as anonymous as possible. The only hope for law enforcement is that the scammers messed up somewhere, like Ulbricht with his gmail address.
How is it that server operators who move extremely important data across the [flat] globe are exempt from KYC et al. laws?
Investard: Yes, I would like to withdraw my U$10 from your exchange.
Exchange: Please provide 18 forms of ID and we'll get back with you in no less than two months while we conduct a review (read: sell your vitals on the Deep Web).
ISIS: I need you to anonymously host a website for me so that I can communicate with my troops on the ground.
Server Operator: No prob, dude. Would you like the server behind curtain number one, curtain number two, or ...
Meanwhile, ...
FBI: Mr. Server Dude, please provide all you have on the Silk Road website admin.
Server Dude: No prob, but please make up a believable story as to how you obtained the info.
FBI: We'll do our job as we suggest to you to shut up and do your job upon request, else it's a fake drowning in a hotel bathtub for your icy ass.
Server Dude: Hey, I have a racist Mormon friend who fucks his daughter and owns a bathtub company. Can we use one of his tubs to stage said act?
FBI: Damn, I didn't see that in the script for the upcoming FOX movie of the week. Come to think of it, I now wonder who's playin' the role of the racist daughter-fucker Mormon, Curtis Green, an active member of the BitcoinTalk forum whose Merit count thingy is on the rise due to his informative posts.
Server Dude: Speakin' of Mormons, how you're mega data mining farm structure where all pipes lead comin' along there in Utah?